冬小麦东农冬麦1号返青后各生育阶段光合生理特性研究

为明确寒地冬小麦返青后各生育阶段光合生理特性对小麦植株生长发育及籽粒形成的影响,以东农冬麦1号为试验材料,对大田种植返青后不同生育阶段小麦叶片光合参数、叶绿素、总可溶性糖和蔗糖含量及籽粒总可溶性糖、蔗糖和淀粉含量等生理指标进行测定分析。结果表明,返青后,随着生育期延长,小麦叶片光合速率、蒸腾速率呈先上升后下降趋势,开花期达到最大值。在开花期之前,气孔导度与胞间CO2浓度均呈上升趋势,光合速率主要受气孔因素影响;开花期后气孔导度与胞间CO2浓度呈相反变化趋势,此时期影响光合速率降低的主要是非气孔因素。叶绿素含量先上升后下降,灌浆期达到最大值;总可溶性糖及蔗糖含量呈下降-上升-下降趋势;籽粒中淀粉...

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Bibliographic Details
Published in东北农业大学学报 Vol. 44; no. 7; pp. 58 - 63
Main Author 宋扬 苍晶 范博 许贺 于晶 刘丽杰 李怀伟
Format Journal Article
LanguageChinese
Published 齐齐哈尔大学通信学院,黑龙江齐齐哈尔161006 2013
东北农业大学生命科学学院,哈尔滨,150030%东北农业大学生命科学学院,哈尔滨150030
Subjects
东农冬麦1号
返青后,光合生理特性
returning green stage
photosynthetic and physiological characteristic
东农冬麦1号
返青后,光合生理特性
Dongnongdongmai1
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ISSN1005-9369

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Summary:为明确寒地冬小麦返青后各生育阶段光合生理特性对小麦植株生长发育及籽粒形成的影响,以东农冬麦1号为试验材料,对大田种植返青后不同生育阶段小麦叶片光合参数、叶绿素、总可溶性糖和蔗糖含量及籽粒总可溶性糖、蔗糖和淀粉含量等生理指标进行测定分析。结果表明,返青后,随着生育期延长,小麦叶片光合速率、蒸腾速率呈先上升后下降趋势,开花期达到最大值。在开花期之前,气孔导度与胞间CO2浓度均呈上升趋势,光合速率主要受气孔因素影响;开花期后气孔导度与胞间CO2浓度呈相反变化趋势,此时期影响光合速率降低的主要是非气孔因素。叶绿素含量先上升后下降,灌浆期达到最大值;总可溶性糖及蔗糖含量呈下降-上升-下降趋势;籽粒中淀粉含量随总可溶性糖和蔗糖含量的下降而上升。
Bibliography:SONG Yang, CANG Jing, FAN Bo, XU He, YU Jing, LIU Lijie, LI Huaiwei（1. School of Life Sciences, Northeast Agricultural University, Harbin 150030, China; 2. Communication and Electronic Engineering Institute, Qiqihar University, Qiqihar Heilongjiang 161006, China）
23-1391/S
Dongnongdongmai1; returning green stage; photosynthetic and physiological characteristic
Photosynthetic parameters, chlorophyll content, soluble sugar content, sucrose content and starch content of tillering nodes and leaves of Dongnongdongmail were determined under different growing periods after returning green stages in order to study the effects of photosynthetic and physiological characteristics on kernel formation and growth of Dongnongdongmail. The results showed that with the process of growth net potosynthetierate （Pn） and transpiration rate （Tr） had a trend of inereasing at first, then decreasing and reached the maximum during the anthesis. Before anthesis, there was a similar trend in the variation of stomatal conductance （Gs） and i
ISSN:1005-9369